APPLICATION OF PHENOCRYSTS MINERALOGY DATA TO SMALL CAUCASUS OPHIOLITE VOLCANIC SERIES TYPIFICATION

Mineralogical aspects of Small Caucasus ophiolite volcanic series typi fication is considered. Much attention is given to clinopyroxene which presents in all the rocks studied. More than 100 microprobe analyses of clinopyroxenes from Caucasus's rocks have been used as well as more than 100 microprobe analyses of clinopyroxenes from Cyprus's ophiolit e volcanites, Island's modern volcanites, 15-20 anomaly, Vim break, an d Amper submarine mountain (all the localities are in the Atlantic Oce an) taken for comparison. The data are given on orthopyroxenes, spinel lides, and plagioclases which were founded in some of rocks studied as both an individual mineral phases and inclusions in minerals. Modifie d triangle diagram has been proposed for identification of clinopyroxe nes from rocks different in geotectonic formation conditions: SiO2/100 - TiO2 - Na2O. The data on Ti, Na, and Si distribution between clinop yroxene and enclosed melt are given for the first time.